Popularly known as "black boxes," event data recorders (EDRs) have helped investigators solve the mysteries of airplane crashes for decades. Now they've become standard in almost every new car sold.

(1) See black box testing and Black Box Corporation. (2) An electronic device that records airplane flight data. Officially a "flight data recorder," the unit is highly protected and can emit a ...

Investigators say they have recovered the flight and voice recorder from an Army Black ... has recovered the helicopter's single-unit black box and removed it to agency headquarters.